Class: GRI::Scheduler

Inherits:
Object show all
Defined in:
lib/gri/scheduler.rb

Direct Known Subclasses

UScheduler

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(loop, metrics) ⇒ Scheduler

Returns a new instance of Scheduler.



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# File 'lib/gri/scheduler.rb', line 5

def initialize loop, metrics
  @loop = loop
  @metrics = metrics
  @loop.on_detach {process_queue}
  @writers = []
end

Instance Attribute Details

#fake_descr_hash ⇒ Object

Returns the value of attribute fake_descr_hash.



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# File 'lib/gri/scheduler.rb', line 3

def fake_descr_hash
  @fake_descr_hash
end

#queue ⇒ Object

Returns the value of attribute queue.



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# File 'lib/gri/scheduler.rb', line 3

def queue
  @queue
end

#writers ⇒ Object

Returns the value of attribute writers.



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# File 'lib/gri/scheduler.rb', line 3

def writers
  @writers
end

Instance Method Details

#finalize ⇒ Object 



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# File 'lib/gri/scheduler.rb', line 58

def finalize
  @writers.each {|w| w.finalize if w.respond_to? :finalize}
end

#process1(col_type, host, options) ⇒ Object 



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# File 'lib/gri/scheduler.rb', line 26

def process1 col_type, host, options
  return if Config['nop']
  return if col_type == 'fluentd'
  collector = Collector.create(col_type, host, options,
                               @fake_descr_hash) {|records|
    for writer in @writers
      puts "  writer #{writer.class}" if $debug
      writer.write records
    end
    @metrics[:record_count] += records.size
  }
  if collector
    #puts "#{collector.class} (#{col_type}): #{host}" if $debug
    interval = (options['interval'] || 300).to_i
    collector.interval = interval
    timeout = (options['timeout'] || Config['timeout'] || 90).to_i
    collector.timeout = [timeout, interval].min
    collector.on_error {@metrics[:error_count] += 1}
    collector.on_retry {@metrics[:retry_count] += 1}
    Log.info "[#{$$}] #{host}: collect #{col_type}"
    begin
      @loop.run if collector.sync?
      @loop.attach collector
    rescue SystemCallError
      Log.error "#{host}: ERROR: #{$!}"
      puts "#{host}: ERROR: #{$!}" if $debug
      @loop.detach collector
    end
    @metrics[:run_count] += 1
  end
end

#process_queue ⇒ Object 



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# File 'lib/gri/scheduler.rb', line 12

def process_queue
  while @loop.collectors.size < 5
    host, options = queue.shift
    break unless host
    next if host =~ /^GRIMETRICS/

    ts = options['type']
    col_types = ts ? ts.split(',') : ['snmp']
    for col_type in col_types
      process1 col_type, host, options
    end
  end
end